Window lock



Jan.l 10, 1933. 1, M, RURKA 1,894,060

WINDOW .LOCK

Filed Feb. 2o. 1951 `Q i v I Z9 a /26 mw 26 [j ,MM5 u 30 g w//l//mn CIVPatented Jan. 10, 1933 PATENT OFFICE JOSEPH M. RURKA, 0F CHICAGO,ILLINOIS WINDOW LOCK Application led February 20, 1931.

The present invention relates to window locks and has for its mainobject the provision of a lock whereb-y relative movement of two windowsashes may be limited.

A further object of the present invention is the provision of a lock ofthe character indicated which may be adjustable for the purpose ofregulating the respective sliding movement of the two window sashes.

A still further object of the present invention is the provision of alock of the character stated which would include a bolt, which may beangnlarly shifted on horizontal plane with respect to the frame withwhich the same cooperates, and which may be frictionally held in itsoperative position.

A still further object of the present invention is the provision of alock made of comparatively few parts, and which may be easily assembledand inexpensively manufactured.

Vith the above general objects in View and others that will appear asthe invention is better understood, the same consist-s in the novelconstruction, combination and arrangement of parts hereinafter morefully described, illustrated in the accompanying drawing and pointed outin the appended claims.

In the drawing forming a part of this application, and in which likedesignating characters refer to corresponding` parts throughout theseveral views,

Figure 1 is a fragmentary perspective view of the window showing theapplication of my device;

Figure 2 is a cross-sectional view on line 22 of Figure 1;

Figure 3 is an enlarged elevational view of the lock with the boltthereof in operative position;

Figure 4 is a cross-sectional view on line 4-4 of Figure 3;

Figure 5 is a cross-sectional view on line 5--5 of Figure 3; and

Figure 6 is a fragmentary view through the lock along line 6 6 of Figure3.

Referring in detail to the present drawing there is shown therein windowframe generally indicated by 10, provided with the Serial No. 517,230.

usual sill 11. The window further includes upper sash, includinguprightsash bar `12 and horizontal lower sash bar 13 and pane 14. The lowerwindow sash includes upright sash bar 15, the upper horizontal sash bar16 and pane 17.

Adapted for mounting upon the upright sash bar 12 of the upper windowsash is an oblong plate 18 provided with a plurality of apertures-19 forpassing screws 2O therethrough for mounting said plate upon the windowsash bar 12. Adjacent each of its ends and laterally thereof is ear 21,each bent in one and the same direction to form loop 22, so that whensaid. plate 18 is mounted upon the window sash bar 12, said loops 22face the window pane 14.

Frictionally held within: said loops 22 by its ends is rod 23 ofcomparativeV thickness and of round periphery. Said rod 23 is spaced`from the adjacent edge of plate 18, as clearly seen on Figure 3.Substantially cri-extensive with the outer face of said plate 18 rod 23is provided with a seriesof notches 24 with the resultant series ofspacers 25.

Preparatory to impinging said rod 23 within loops 22 bolt 26 is passedover said rod, said bolt 2G comprising substantially rectangular blockwith a bore 27 adjacent one of its ends within which rod 23isinsertable, and upon which said bolt 26 is adapted to make longitudinalsliding movement.

Drilled longitudinally in said bolt 26 and in transverse relation withbore 27 is bore 28 for receiving therewithin plunger 29, said plunger 29being under actuation by coil spring 30 positioned at the other end ofsaid bore 28. Plug 31 frictionally held within outer end of bore 28maintains spring 30 and plunger 29 in position within bore 28.

From thehereinabove description it will be seen that when bolt 26 isangularly shifted on horizontal plane with respect to plate 18, whenplunger 29 comes in alinement with any one of notches 24, position bestshown on Figure 5, said plunger 29 will snap by its adjacent end intonotch 24, it` being actuated into that position by the pressure ofspring 30. When in thatcperative position, bolt 26 will remain in thepath of movement for the sliding movement when said bolt is swung tolower window sash, including horizontal bar a predetermined angularposition.

16 thereof, and it will then be possible to raise the lower window sashonly as far as bolt 26 permits. When in that operative position, bolt 26may be shifted therefrom only by applying thereto manual pressure tobring the same to an inoperative position, or in alinement with theplane of plate 18, the position illustrated by dotted lines on Figure 5.

When in that inoperative position plunger 29 will contact by itsadjacent end with the smooth periphery of rod 23 when it will bepossible to manually shift bolt 26 and longitudinally of rod 23. When inthat inoperative position bolt 26 may be shifted towards any selectednotch 24 in order to bring plunger 29 in alinement therewith forangularly shifting bolt 26 to its operative position.

From the hereinabove description it will therefore be seen that bolt 26is longitudinally adjustable upon rod 23 by virtue of which fact theextent of shifting one Window sash with respect to the other will beregulated.

So that the end of bolt 26 adjacent plate 18 may not interfere with theadjacent edge of said plate, the adjacent end of said bolt 26 is roundedas at 32.

While there is described herein a preferred embodiment of the presentinvention it is nevertheless to be understood that minor changes may bemade therein without departing from the spirit and scope of theinvention as claimed.

What I claim as new is: c

l. A window lock comprising a plate, a rod in spaced rigid position withrespect to said plate, said rod being provided with a plurality ofnotches, a bolt set upon. said rod for longitudinal movement thereon,said bolt being adapted to make angular shifting movement with respectto said plate, and tensioning means cooperating with said bolt forselectively engaging said rod at any one of Said notches when said boltis swung to the angular position with respect to said plate.

2. A window lock comprising a stationary elongated plate, a rodcoextensive in length therewith and fixedly supported thereon in spacedrelation to one edge thereof, said rod havin spaced superimposednotches, a bolt rotata ly mounted on said rod and capable of verticalsliding adjustment thereon, and means carried by the bolt and adapted tobe selectively arranged in said notches to hold the bolt fixedrelatively to the rod in a given position.

3. A window lock comprising a rod, a bolt set upon said rod forlongitudinal sliding and horizontal angular movements thereon, aplurality of spaced bolt engaging means upon said rod, and means uponsaid bolt to be selectlvely engaged by said first named means for thepurpose of holding said bolt against In testimony whereof I affix mysignature.

